/Engine/Plugins/Editor/UVEditor/Source/UVEditor/Public/UVEditorMode.h
Gets the tool target requirements for the mode. The resulting targets undergo further processing to turn them into the input objects that tools get (since these need preview meshes, etc).
static const [FToolTargetTypeRequirements](API\Runtime\InteractiveToolsFramework\ToolTargets\FToolTargetTypeRequirements) & GetToolTargetRequirements()